/**
 * @author 余鹏龙
 * @version 1.0
 */

class Base {
    Base() {
        System.out.println("Base");
    }
}

public class Alpha extends Base {

    Alpha() {
        super();
    }

    public static void main(String[] args) {

        new Base();  //2
        
    }
}
//new Alpha();  //1
//调用父类无参的构造方法
